BT-168PRO: To test all different kinds of batteries (AA, AAA, C, D, 9V, mini cell) Check the power level of all 1.5V, 9V, and 1.5V miniature cells Can quickly test the capacity of your battery Easy-to-read, digit indicates power level Test multiple sizes of batteries in one unit. (1.5V: AAA, HP16, MN2400, R03, AA, HP7, MN1500, UM3, C, HP11, MN1400, SP11, LR14, UM2, D, HP2, MN1300, SP2, R20, UM1; 9V: PP3, MN1604, 6F22, 006P) Specification: Battery Size: 1.5V | 9V Good: 1.5V ~ 1.28V| 9V ~ 7.8V Low Power: 1.3V ~ 1.15V| 7.8V ~ 6.3V Replace: 1.15V| 6.3V Size: . 110 x 60 x 25mm/ 4.3inch x 2.4inch x 1.0inch Note: For 1.5V and 9V batteries, read off LCD. For 1.5V mininature cells, read off LCD. IF LCD does not display, check that battery is touching both contacts before assuming that it is completely dead. This Battery Tester is activated by the battery being checked. Keep test times as short as possible, to avoid unneccessary battery drain. Color: Black Material: plastic Package Contents: 4 x Battery Tester Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.